DevTools: [CSS] remove getAllStylesheets method from protocol

LayoutTests/inspector/styles/styles-new-API-expected.txt

 Tests that InspectorCSSAgent API methods work as expected.
 
 H1
 
 
 === Computed style property count for body ===
 OK
 
 === Matched rules for body ===
 body: [user-agent] {
@@ skipping 133 matching lines @@
 ['width':'50%'] @[undefined-undefined] style
 
 === Stylesheet-for-inline-style text ===
 
 
 === Stylesheet-for-inline-style modification result ===
 NotSupportedError
 
 === All stylesheets ===
 
+StyleSheet: '@import url(styles-new-API-2.css);
+
+@page { margin: 2cm } /* All margins set to 2cm */
+
+@page :first {
+  margin-top: 10cm    /* Top margin on first page 10cm */
+}
+
+@media screen {
+
+#absent-id {
+}
+
+@font-face {
+    font-family: 'TheFont';
+    src: url('font.url');
+    font-weight: normal;
+    font-style: normal;
+}
+
+body {
+    property: imported-media-screen-stylesheet;
+}
+
+}
+'
+#absent-id: [regular, 10:0-10:10] {
+}
+body: [regular, 20:0-20:4] {
+    ['property':'imported-media-screen-stylesheet' non-parsed] @[21:4-21:47] active
+}
+
+StyleSheet: '@import url(styles-new-API-1.css);
+
+@page { margin: 2cm } /* All margins set to 2cm */
+
+@page :first {
+  margin-top: 10cm    /* Top margin on first page 10cm */
+}
+
+@media screen {
+
+#absent-id {
+}
+
+@font-face {
+    font-family: 'TheFont';
+    src: url('font.url');
+    font-weight: normal;
+    font-style: normal;
+}
+
+body {
+    property: imported-media-screen-stylesheet;
+}
+
+}
+'
+#absent-id: [regular, 10:0-10:10] {
+}
+body: [regular, 20:0-20:4] {
+    ['property':'imported-media-screen-stylesheet' non-parsed] @[21:4-21:47] active
+}
+
 StyleSheet: '@charset "UTF-8";
 
 @import url("styles-new-API-1.css");
 
 html {
     font-weight: 400;
 }
 
 @media screen {
 body {
@@ skipping 76 matching lines @@
     ['border-image-slice':'initial'] @[undefined-undefined] style
     ['border-image-width':'initial'] @[undefined-undefined] style
     ['border-image-outset':'initial'] @[undefined-undefined] style
     ['border-image-repeat':'initial'] @[undefined-undefined] style
     ['border-top-width':'0px'] @[undefined-undefined] style
     ['border-right-width':'0px'] @[undefined-undefined] style
     ['border-bottom-width':'0px'] @[undefined-undefined] style
     ['border-left-width':'0px'] @[undefined-undefined] style
 }
 
-StyleSheet: '@import url(styles-new-API-2.css);
-
-@page { margin: 2cm } /* All margins set to 2cm */
-
-@page :first {
-  margin-top: 10cm    /* Top margin on first page 10cm */
-}
-
-@media screen {
-
-#absent-id {
-}
-
-@font-face {
-    font-family: 'TheFont';
-    src: url('font.url');
-    font-weight: normal;
-    font-style: normal;
-}
-
-body {
-    property: imported-media-screen-stylesheet;
-}
-
-}
-'
-#absent-id: [regular, 10:0-10:10] {
-}
-body: [regular, 20:0-20:4] {
-    ['property':'imported-media-screen-stylesheet' non-parsed] @[21:4-21:47] active
-}
-
-StyleSheet: '@import url(styles-new-API-1.css);
-
-@page { margin: 2cm } /* All margins set to 2cm */
-
-@page :first {
-  margin-top: 10cm    /* Top margin on first page 10cm */
-}
-
-@media screen {
-
-#absent-id {
-}
-
-@font-face {
-    font-family: 'TheFont';
-    src: url('font.url');
-    font-weight: normal;
-    font-style: normal;
-}
-
-body {
-    property: imported-media-screen-stylesheet;
-}
-
-}
-'
-#absent-id: [regular, 10:0-10:10] {
-}
-body: [regular, 20:0-20:4] {
-    ['property':'imported-media-screen-stylesheet' non-parsed] @[21:4-21:47] active
-}
-
 StyleSheet: '
 
 /* An inline stylesheet */
 body.mainpage {
     text-decoration: none; /* at least one valid property is necessary for WebCore to match a rule */
     ;badproperty: 1badvalue1;
 }
 
 body.mainpage {
     prop1: val1;
@@ skipping 176 matching lines @@
 ['border-top-color':'initial'] @[undefined-undefined] style
 ['border-right-color':'initial'] @[undefined-undefined] style
 ['border-bottom-color':'initial'] @[undefined-undefined] style
 ['border-left-color':'initial'] @[undefined-undefined] style
 ['border-image-source':'initial'] @[undefined-undefined] style
 ['border-image-slice':'initial'] @[undefined-undefined] style
 ['border-image-width':'initial'] @[undefined-undefined] style
 ['border-image-outset':'initial'] @[undefined-undefined] style
 ['border-image-repeat':'initial'] @[undefined-undefined] style